/* ==========================================
   石榴直播 (shiliuzhibo.net) 全站统一 CSS 样式
   ========================================== */
:root {
  --primary-color: #E63946;
  --primary-hover: #D62828;
  --dark-bg: #1D3557;
  --light-bg: #F8F9FA;
  --text-main: #2B2D42;
  --text-muted: #6C757D;
  --border-color: #E2E8F0;
  --max-width: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-main);
  background-color: #FFF;
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main { flex: 1; }

/* 统一 Header 导航栏 */
header {
  background: #FFF;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
}
.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-color);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo-badge {
  background: var(--primary-color);
  color: #fff;
  font-size: 0.75rem;
  padding: 2px 6px;
  border-radius: 4px;
}
.nav-links { display: flex; gap: 2rem; list-style: none; align-items: center; }
.nav-links a { text-decoration: none; color: var(--text-main); font-weight: 500; transition: color 0.2s; }
.nav-links a:hover, .nav-links a.active { color: var(--primary-color); }
.btn-download { background: var(--primary-color); color: #FFF !important; padding: 0.5rem 1.2rem; border-radius: 20px; font-weight: 600 !important; }
.btn-download:hover { background: var(--primary-hover); }

/* 统一 页面标题区 (Banner) */
.page-banner {
  background: linear-gradient(135deg, #FFF5F5 0%, #FFE3E3 100%);
  padding: 3.5rem 1.5rem;
  text-align: center;
}
.page-banner h1 { font-size: 2.2rem; font-weight: 800; color: #111; margin-bottom: 0.5rem; }
.page-banner p { color: var(--text-muted); font-size: 1.1rem; }

/* 统一 内容容器 */
.container { max-width: var(--max-width); margin: 0 auto; padding: 3rem 1.5rem; }

/* 统一 Footer 页脚 */
footer { background: var(--dark-bg); color: #FFF; padding: 3rem 1.5rem 1.5rem; margin-top: auto; }
.footer-container { max-width: var(--max-width); margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 2rem; }
.footer-col h4 { font-size: 1.1rem; margin-bottom: 1rem; color: #FFF; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 0.5rem; }
.footer-col a { color: #A0AEC0; text-decoration: none; font-size: 0.9rem; }
.footer-col a:hover { color: #FFF; }
.footer-bottom { max-width: var(--max-width); margin: 2rem auto 0; padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,0.1); text-align: center; color: #A0AEC0; font-size: 0.85rem; }

/* 首页 Card 样式 */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; margin-top: 2rem; }
.feature-card { background: var(--light-bg); padding: 2rem; border-radius: 16px; text-align: center; border: 1px solid var(--border-color); }
.feature-card h3 { margin-bottom: 0.8rem; font-size: 1.3rem; }
.feature-card p { color: var(--text-muted); font-size: 0.95rem; }

/* 下载卡片样式 */
.download-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; margin-top: 1rem; }
.download-card { border: 1px solid var(--border-color); padding: 2.5rem 2rem; border-radius: 16px; background: #FFF; text-align: center; }
.download-card h2 { margin-bottom: 0.5rem; }
.download-card p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 1.5rem; }
.btn-card { display: inline-block; padding: 0.8rem 1.8rem; border-radius: 8px; text-decoration: none; font-weight: 600; }
.btn-dark { background: #111; color: #FFF; }
.btn-primary { background: var(--primary-color); color: #FFF; }

@media (max-width: 768px) {
  .nav-links { display: none; }
  .page-banner h1 { font-size: 1.8rem; }
}